Shuttle-checking mechanism for looms.



PATENTED JUNE 30, 1903.

G. H. PARKER. SHUTTLE CHECKING MECHANISM FOR LOOMS.

APPLIUATION FILED DEC. 22, 1902.

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H0 MODEL.

0.. wnsmuarou u c 'No. 7321437. PATENTED JUNE 30, 1903..

G. H. PARKER. SHUTTLE CHECKING MECHANISM FOR LOOMS.

APPLICATION FILED DBO. 22, 1902.

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N0 MODEL.

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UNITED STATES Patented June 30, 1903.

PATENT OFFICE.

GEORGE H. PARKER, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNOR TO DRAPERCOMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

SHUTTLE-CHECKING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 732,437, dated June 30,1903.

Application filed December 22, 1902. Serial No. 136,112. (No model.)

To all whom, it may concern.-

Be it known that I, GEORGE H. PARKER, a

citizen of the United States, and a resident of New Bedford, county ofBristol, Stateof Massachusetts,have invented an Improvement inShuttle-Checking Mechanism for Looms, of which the followingdescription,in connection with the accompanying drawings, is aspecification, like characters on the drawings repre- IO sent-ing likeparts.

This invention relates to mechanism for checking the shuttle when itenters the shuttle-box of a loom; and it has for its object theproduction of novel means for preventing 1 5 rebound of the shuttle whenit enters the shuttle-box.

The various novel features of my invention will be described inpthesubjoined speci-- fication and particularly pointed out in the followingclaims.

Figure 1 is a top or plan view of the lefthand end of a loom-lay andshuttle box thereon with one embodiment of my invention applied thereto.Fig. 2 is a front elevaz5 tion thereof. Fig. 3 is a transverse sectionon the line 3 3, Fig. 1, looking toward the right. Fig. 4 is a viewsimilar to Fig. 1, but showing another form of my invention. Fig. 5 is arear elevation thereof; and Fig. 6 is a 0 transverse section on the line6 6, Fig. 5,1001;-

ing toward the left.

The lay A having a shuttle-box thereon, comprising a front plate orwallB, back wall B, overhanging top or shuttle-guard B a 5 binder Bpivotally mounted at b near the outer end of the lay, and the picker P,

whose stafi plays in the longitudinal slot A in the lay, may be and areall of well-known or usual construction. So, too, the protector 4orock-shaft p, its controlling-spring S, the dagger rocker-arm p on therock-shaft, and

the upturned binder-finger 19 thereon to bear against the free end ofthe binder are of usual construction and operate in a manner 5 familiarto those skilled in the art.

The high rate of speed of the shuttle as it enters the box causes such ablow to be delivered upon the binder-swell that the binder B is thrownout against the spring S of the protector mechanism, and before thebinder can return to firmly engage the shuttle and hold it the shuttlehits the picker and frequently bounds back.

In my present invention I have provided means whereby the impact of theshuttle upon the picker'is utilized to quickly bring the binder againstthe side of the shuttle with a force and rapidity verylargelyproportional to the speed of the incoming shuttle, whereby the latter isproperly checked and its rebound is prevented.

Referring to Figs. 1, 2, and 3, a bracket D is bolted to the front ofthe lay near the inner end of the shuttle-box, said bracket having adepending foot D, provided with a slotted projection or guide d at itslower end substantially above the dagger, and a stud d projects from thebracket at right angles thereto. A bell-crank lever f f has its hub fmounted upon the stud as a fulcrum, the arm f being upturned and showninFig. 2 as slotted at 2 to receive one end of a check-strap H, the latterextending from said arm outward around the outer end of the shuttle-boxacross .the path of the picker and being fixedly secured at its otherend to a pin 5 on the lay. The strap is looped through the slot 2 andfastened by a suitable bolt 6, which can be moved into different holes 3in the strap to adjust the operative length of the latter whennecessary. The arm f of the bell-crank is extended toward the outer endof the shuttle-box and is provided with a downturned finger fflwhichpasses loosely through the slotted projection or guide cl and projectsbelow it. A spring 3 interposed between the extension and the arm f andshown as coiled around the finger, maintains the parts normally in theposition shown, with the arm f against a stop-lug cZ on the bracket.When the shuttle enters the box, its impact upon the swell of the binderswings the inner free end of the latter out against the force of theprotector-spring S, rocking the shaft p and elevating the dagger more orless, but sufficiently to clear the frog. As the shuttle passes into thebox it strikes the picker and throws it against the checkstrap H, thelatter thereupon turning the bellcrank lever f f and pressing the fingerf against the dagger. Such downward pressure on the dagger instantlyacts through the binderfinger p to force the binder inward against theshuttle, checking the latter in the proper position in the box withoutany chance for rebound. The faster the shuttle speed the harder will bethe auxiliary pressure exerted on the binder by the means described andthe more rapidly will the binder be moved against the shuttle, thepressure and rapidity of movement of the binder decreasingproportionally to a decrease in the shuttle speed, as it should be. Assoon as the shuttle is thrown the tension on the check-strap isreleased, the spring 3 expands, and the parts are thereby returned tonormal position.

In Figs. 4, 5, and U I have shown another form in which my invention isembodied, the additional pressure upon the binder being effected throughthe protector mechanism substantially as has been described, but withoutoperating through the dagger. A bracket M is secured to the back of thelay by suitable screws 'm which extend through vertical slots 8 in thebracket to provide for vertical adjustment, the bracket projecting belowthe lay near the inner end of the shuttle-box and having arearwardly-extended rocker-stud m mounted thereon. The hub a of abellcrank lever 91- n is fulcrumed on said stud, the arm n beingupturned above the lay and having a slot 10, Fig. 5, while the arm nextends toward the center of the lay and has an upturned tip n below andadapted to at times enter a groove 19 made in the hub of thebinder-finger fi. A spring 8 surrounds the stud between the bracket andthe hub 01*, one end of the spring being fixed by the bracketand theother end bearing against the bell-crank to normally hold itin theposition shown in Fig. 5, with the arm n againstastop m on the bracket.The hub 'n is secured to the rocker-stud 'm by a suitable set-screw 12.A check-strap K is looped through the slot 10 of arm n and carriedoutwardly and around the outer end of the shuttle-box across the path ofthe picker, the end of the strap being secured to a fixed part, as thefront wall B of the box. When the shuttle enters the box, it throws thebinder outward,'and the shuttle, passing on into the box, strikes thepicker and throws it against the strap K. The tension on the latterthereby produced rocks the bellcrank lever and lifts its arm 71,bringing its upturned end n into the notch 19 and lifting the outer endof the rocker-arm p. The binder-finger is thereby pressed against thebinder, forcing it inward against the shuttle with a rapidity and forceproportional to the speed of the shuttle as it entered the box. By thisadditional pressure upon the shuttle, exerted when the latter is fullyboxed, the rebound of the shuttle is prevented, and it is checked in thebox in proper position.

In both forms herein shown as embodying my invention it will be seenthat the additional pressure exerted upon the shuttle through the binderis due to the speed of the incoming shuttle, the force of the blow beingin both cases transmitted to the binder through the check-strap and thebinder-finger of the protector mechanism.

The spring controlling the bell-crank lever operates to normally drawthe bight of the strap inward to move the picker inward from the outerend of the lay as the shuttle is thrown from the box, and by regulatingthe length of the spring and the length of the check-strap the necessaryadjustment can be effected with ease.

Having fully described my invention, what I claim as new, and desire tosecu re by Letters Patent, is-

1. A shuttle box, a picker, a binder, a binderfinger, a rocking memberpivotally mounted adjacent the box independently of the binder, a strapfixed at one end and passing around the shuttle-box and connected at itsother end with said rocking member, and transmitting means between saidmember and the binder-finger, impact of the shuttle on the picker actingthrough the strap to rock said member and thereby through thetransmitting means to augment the pressure upon the binder through thebinder-finger.

2. Ashuttle-box, a pivoted binder, protector mechanism to cooperatetherewith, a rocking member mounted independently of the binder andoperatively connected with the protector mechanism, and means governedby or through impact of the incoming shuttle to rock said member and actthrough the protector mechanism to augment the pressure upon the binder,to check the shuttle and prevent rebound.

3. A shuttle-box, a picker, a pivoted binder, a bell-crank pivotedadjacent the box independently of the binder, a binder finger,transmitting means between the latter and the bell-crank, and a strappassing around the shuttle-box and having one end fixed and the otherend connected with the bell-crank, rocking of the latter acting throughsaid means upon the binder-finger to augment the pressure upon thebinder.

4. A lay, a shuttle-box thereon, a binder and a binder-finger, a picker,a check-strap movable by engagement with the picker to rock a normallyinoperative lever pivotally mounted on the lay, said lever, and anextension or arm on the lever to move the binder-finger and therebyaccelerate the inward movement of the binder into checking position andto augment its pressure upon the shuttle.

5. A shuttle-box, a picker,a pivoted binder, protector mechanism tocooperate therewith, a spring-controlled lever pivotally mountedadjacent the shuttle-box to cooperate directly with and act through theprotector mechanism to augment the pressure of the binder, and meansgoverned by impact of the incoming shuttle upon the picker tooperatively rock the bell-crank against the action of itscontrolling-sprin g.

6. Ashuttle-box,a picker, apivoted binder, protector mechanism tocooperate therewith, a spring-controlled lever pivotally mountedadjacent the shuttle-box to cooperate directly with and act through theprotector mechanism to augment the pressure of the binder, and acheck-strap fixed at one end and passing around the shuttle-box, theother end of the strap being attached to the bell-crank, to operate asand for the purpose set forth.

7. In a loom and in combination a shuttlebox, a picker, a pivotedbinder, a cooperating binder-finger, a strap passing around theshuttle-box and fixed at one end, and a bellcrank pivoted adjacent thebinder-finger, said bell-crank having an arm connected to the other endof the strap and a second arm adapted to efiect forcible movement of thebinder finger against the free end of the binder, as and for the purposeset forth.

8. Ashuttle-box, a picker, abinder, protector mechanism cooperatingtherewith, a strap passing around and connected at one end to the lay, adevice pivotally mounted on the lay and connected with the other end ofthe strap and having an arm adapted to be forced with an impact-pressureagainst a part of the protector mechanism, whereby the strap receivesand imparts the force of the impact of the shuttle to the said pivoteddevice and thence to the protector mechanism and thereby augments thepressure upon the free end of the binder.

9. A shuttle-box, a picker, a binder, a cooperating binder-finger and aprotector-shaft upon which it is mounted, a strap connected at one endto the lay, a bell-crank lever mounted upon the lay and having one armconnected to the other end of said strap, the other arm of said leverbeing adapted to turn the protector-shaft and effect forcible movementof the binder-finger against the free end of the binder, and means toadjust the length of the strap, to thereby render effective the lockingpressure of the binder upon the shuttle at any point of its travel inthe box.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

GEORGE H. PARKER.

Witnesses:

GEORGE N. GARDINER. MYRA O. HEYER.

